Burner



Dec. 18, 1934. F. T. JOHNSON BURNER Filed Feb. 9, 1931 5 W m C m r y W VA m@ H 7% OWN k I! R- m m ny Patented Dec. 18, 1934 UNITED STATE BURNER Francis T. Johnson, Chicago, 111.,

Chester T. M. Johnson and Martin F.

son, Chicago, Ill.

assignor to W. John- Application February 9, 1931, Serial No. 514,502

4 Claims.

This invention relates to a burner adapted to burn fluid fuel and particularly to burn a mixture of air and gas.

One object of the invention is to provide a long burner and to provide in connection with such a burner means for securing proper distribution of fuel throughout the length of .the burner. Another object of the invention is to provide in connection with a long burner means for equalizing the burning of the fuel. Another object is to provide in connection with a cylinder of an ironing machine a burner which equalizes the burning effect throughout its entire length. A further object is to provide in connection with the cylinder of an ironing machine means for heating the cylinder throughout its length equally.

Other objects will appear from time to time in the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawing, wherein-- Figure l is a vertical cross section of my burner, positioned in the cylinder of anironing machine;

Figure 2 is a transverse vertical cross section, taken on an enlarged scale, at line 2-2 of Figure 1; r V

Figure 3 is an enlarged longitudinal sectional detail of a portion of the burner;

Figure 4 is an enlarged longitudinal sectional detail of the air and gas mixing valve.

Like parts are designated by like characters throughout the specification and drawing.

A is a foundation of any suitable sort, upon which frame or supporting members A rest and to which they may be secured if desirable. One or more longitudinal frame members A may be used for joining the frame members A and for strengthening the frame as a whole. The frame members A are provided with enlarged bearings A which are supported preferably adjacent the upper ends of the frames A. These bearings serve as supports for the cylinder. 1

At one end of the cylinder is mounted a cylinder supporting member B, which is generally tubular and adapted to be journaled in one of the bearings A The member B is enlarged somewhat as at B and thus provides a shoulder as at B The enlarged portion B is provided with a laterally extending flange or wheel-like portion B which has perforations 28 At its outer edge the wheel-like portion or flange B may be extended as at B to provide an increased area of contact for supporting the-cylinder.

' At its opposite ends the cylinder is supported upon a member C which is generally cylindrical as shownat .the right hand of Figure 1,. is enlarged as at C 'and'hasa shoulder C Like the member B it has an enlarged laterally extended flange or wheel-like. portion C which is perforated as at C4. The outer edge of the flange portion C may be extended as at C to provide a relatively wider surface to receive the cylinder. The portion 0 of the right hand cylinder supportingmember, asindicated in Figure l, is journaled in the right hand bearing A It may carry at its outer end a gear C which is fastened upon it by means of a set' screw C or by other suitable engaging means. The gear C may be driven from any suitable power source and thus the cylinder maybe rotated.

D is a cylinder positioned at one end upon the portion-B of the member B and at the other end upon the portion C of the member C The cylinder is shown more or less diagrammatically as it is intended merely to indicate that the .burner maybe used in the cylinder of an ironing or other laundry machine. Usually such cylinders have associated withthem one or more other cylinders so that material being treated is passed between and subjected to pressure from the two cylinders. I have not shown the other cylinder nor have I shown the details of the driving means for the cylinder D, as these structural details form no particular part of the present invention.

E is a supply pipe from which gas is supplied to .the burner. It is attached to a'second pipe E and a valve E is inserted in the system. This valve maybe adjusted to control the flow of gas to the pipe E or to outit off entirely.

By means of another pipe E it communicates with a mixing or injection valve E having a nozzle E Within it. Connections E 5 lead from a blower E which supplies air and a valve' E is inserted between the connections E and is provided with a lever E for-moving it so as to shut off the supply of air or to vary it. E is a handle extending from the lever E to a place convenient for use. The blower E is preferably electrically driven but may be of any suitable design so long as it is capable of furnishing the necessary volume of air.

F is a relatively smaller pipe connecting with the main gas supply pipe E and provided with a controlling valve F and a nozzle F The nozzle constitutes a pilot light and is positioned so 5 PATENT OFFICE as to be directed through one of the perforations B The purpose of this pilot light is, of course, to light the main burner.

Leading from the member E is a connection G, which is attached to a T-connection G A second T-connection G is attached to the latter by a member G The connection G2 may be located centrally of the burner but this is not an essential feature. Leading in opposite directions from the T-connection G are pipes G G By suitable connections they connect, one at each end, of the burner C The burner is in the form of a pipe or tube, is provided with slots G which may be of any suitable size or shape and is provided at its center with a partition or blocking member G This member cuts one side of the pipe completely off from the other so that gas, air or any fluid which is in one side of the pipe cannot escape through to the other side. The burner is thus in effect made into two burners which meet, end to end. As a matter of fact, the burners might be separate tubular members but for structural convenience and strength, it is preferable to make them as a single pipe and to provide the partition as shown, to make thus in effect two burners. The burner tube G is inserted through the tubular portions of the cylinder supporting members and is preferably out of contact with them.

It will be realized that whereas I have herewith shown and described a practical operative device, nevertheless many changes might be made in the size, shape, number and disposition of parts without departing from the spirit of my invention and I wish, therefore, that my showing be taken as in a sense diagrammatic. In particular, the burner might, as above noted, be made in more than one piece and it might be associated with or used in connection with many devices other than laundry machines or ironing machines. The details of the mounting of the particular cylinder shown in the drawing form, of course, no essential part of the present invention.

The use and operation of my invention are as follows:

My burner may be used in almost any association in which it is necessary to use heat. When it is to be used, ordinarily the main gas valve will be adjusted to supply the necessary quantity of gas, the air valve will be adjusted to supply the necessary quantity of air to the gas, and this mixture will be conducted from the mixing valve to the point of use in thev burner. The mixing valve is preferably of such shape and ar rangement that it has an injector action and in any event makes back movement of the gas into the blower impossible.

The mixed gas and air moves through the pipes from the mixing valve and preferably this mix: ture is caused to make one or more abrupt changes in direction. This has a tendency to promote mixing and to prevent stratification and separation of the ingredients of the mixture. The current of fuel mixture divides approximately equally, half of it moving along the pipe G to the right, as shown in Figure 1, the other half of it moving along the pipe G to the left, as shown in Figure l. The fuel mixture currents thus move upward to the burner and through the burner and the inflammable mixture escapes through the slots in the burner pipe. The currents, of course, cannot get beyond the partition G7 and thus no interference or mixing of the two fuel currents can occur.

The burner may be lighted in any suitable manner but is ordinarily lighted by the use of the pilot light. Ordinarily before the burner is lighted, an approximate adjustment of the air and fuel valve may be made but usually, in practice', further adjustment is necessary after the burner is lighted. This can be made by adjusting either the air valve or the fuel valve or both, and this adjustment of a single air valve or a single fuel valve is effective to adjust the mixture which is being supplied to the two burners. The expression two burners is here used because the burners are in every essential two separate burners. It is merely, because of structural convenience that they are shown as formed from a single tube, and thus the provision of a unitary control, by means of which two burners may be controlled, is a convenience and a decided advantage since both burners may be controlled at the same time and from the single point. Thus, also, satisfactory burning of the fuel throughout the entire length of the cylinder is provided. r

I claim:

1. In a burner, a pipe loop, a portion of said loop formed to permit discharge of fuel from the pipe, means dividing said fuel discharge portion into sections and means for the introduction to said loop of a mixture of air and fuel, and an air supply and a fuel supply and controls for each of them.

2. In a, burner, a pipe loop, a portion of said loop formed to permit discharge of fuel from the pipe, means dividing said fuel discharge portion into sections and means for the introduction to said loop of a mixture of air and fuel, and an air supply and a fuel supply and controls for each of them, connections for them, whereby the air and fuel are mixed and discharged into said loop as a-mixture at a single point.

3. In a burner, a pipe loop, a portion of said loop formed to permit discharge of fuel from the pipe, a partition within said pipe, dividing said fuel discharge portion into two sections of equal length, and a single means for the introduction to said loop of fuel.

4. In a burner, a pipe loop, a portion of said loop formed to permit discharge of fuel from the pipe, a partition within said pipe, dividing said fuel discharge portion into two sections of equal length, and a single means for the introduction to said loop of a mixture of air and fuel, and an air supply and a fuel supply, controls for each of them, connections for them, whereby the air and fuel are mixed and discharged into said loop as a mixture at a single point.

FRANCIS T. JOHNSON. 

